Filter alch_default_page_position should be used to change the default AO options pages position parameter. The default value is 60 (after the Appearance section).
Example
function change_default_page_position() {
return 20;
}
add_filter( 'alch_default_page_position', 'change_default_page_position' );
To modify the page position parameter on a per-page basis use the hook.
